Thanks JanFredholm. I understand S1 to S4. But from my understanding the L12 is the axial length of horn. So i think it should start at the mid point of S1 and go to the midpoint of S2. Is this right ? Correct me if i am wrong .

look at page 15 in "Help" files for Hornresp.
Begun to edit the default horn and name it and take away the old values and make a tapped horn.

in "HELP " it says wery clear that L12 is measured from closed hornthroat to center of driver diapraghm ,thoat side.

It also says that L23 is the lenght of the horn ,measured between throatside of diapraghm to the mouthside of diapraghm.

It also says that L34 is the lenght between center of mouthside of diapraghmand the horn mouth.

As in my "fast" planīs and others more refined schematicīs

Just do as it says in "Help" .
Make a "tryout" so you can learn the program by doing better and better curves, as you can see in "SPL response".under "window".

you can put alot of "0" below the values for the driver.
And you must put a larger value on s2 than s1 and a larger value on s4 thans3. then you can double click on the L12,23,34 and the program helps you. and when you have put in values where the program ask for it you have a "tools" box with a "tapped horn wizard" that make everything for you at a start.

I considered putting a midrange in a tapped horn for my Unity clones. I can't see why it wouldn't work. I opted for bandpass mids instead of tapped horn mids because the mouth of the tapped horn was too big.

Originally posted by Patrick Bateman I considered putting a midrange in a tapped horn for my Unity clones. I can't see why it wouldn't work. I opted for bandpass mids instead of tapped horn mids because the mouth of the tapped horn was too big.

Hi Patrick,
please explain, were you fitting a mid driver to the bass horn or a separate mid horn with dedicated mid driver?
If mid driver to mid horn then the mouth should be roughly the same as the mid Sd or upto twice Sd.

__________________
regards Andrew T.
Sent from my desktop computer using a keyboard

Originally posted by AndrewT
Hi Patrick,
please explain, were you fitting a mid driver to the bass horn or a separate mid horn with dedicated mid driver?
If mid driver to mid horn then the mouth should be roughly the same as the mid Sd or upto twice Sd.

This was a unity horn -
In a Unity horn the mids are basically in a bandpass enclosure which is coupled to the rest of the horn. To complicate matters further, they are NOT located at the apex of the horn! Confusing huh?

Only way to model a Unity horn is with Akabak. I've never seen anyone post an Akabak model though. Back when I was doing my Unity, I hadn't discovered Akabak. If I had six months to myself, I'd love to create a Unity horn model. That would be a heck of a project!